Who has delivered early & did you have signs?

I'm just curious for those of you who have delivered early, did you have signs before hand? And I'm not talking about complications, just delivered earlier than due date with a healthy baby! I just have this feeling that I will deliver my baby early...I have even had dreams about delivering my baby 2 weeks early! I feel further along than I really am...didn't have this feeling with my first pregnancy! I don't know, just curious if anyone has experienced this also!